The U.S. intelligence community has already concluded that Russia meddled in the 2016 White House race, in which Trump upset Democratic frontrunner Hillary Clinton. However, there has been no clear evidence that Russian operatives and Trump campaign officials colluded to defeat Clinton.

The most recent turn of events is that Michael Flynn, fired as Trump’s national security adviser for not disclosing talks with at least one Russian official, is purportedly seeking immunity in exchange for testifying in the Capitol Hill probes.